Copyright --------- The libunistring library and its header files are dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2". This means, you can use it under either - the terms of the GNU Lesser General Public License (LGPL) version 3 or (at your option) any later version, or - the terms of the GNU General Public License (GPL) version 2, or - the same dual license "the GNU LGPLv3+ or the GNU GPLv2". You find the GNU LGPL version 3 in the file COPYING.LIB. This license is based on the GNU GPL version 3, see file COPYING. You can find the GNU GPL version 2 at . Note: This dual license makes it possible for the libunistring library to be used by packages under GPLv2 or GPLv2+ licenses, in particular. See the table in . The documentation is under another license; see in the documentation.